摘要：The relationship between the tectonic event of the Linqing Sub-basin and the destruction of the North China Craton (NCC) is an important factor to consider when studying geodynamic mechanisms in eastern China. In the current study, we present a low-temperature apatite thermochronological analysis of 14 samples to study the tectonic event of the Linqing Sub-basin. Our data showed that the apatite fission track (AFT) ages were in the range of 53.5-124.4 Ma, and the average track lengths were 8.00-11.24 mu m. The grain ages showed that 10 samples had mixed ages and were characterized by discordant distribution. The minimum ages decomposed from AFT ages mainly ranged from 105.3 to 40.8 Ma. We identified a break-in-slope from the depth-minimum age profile, which was related to the Meso-Cenozoic tectonic event. The AFT age data could be decomposed into three age groups, namely, P3 (394.8-215.7 Ma), P2 (124.6-83.4 Ma), and P1 (70.7-40.8 Ma), indicating three significant tectonic events in the NCC. P3 is related to the uplift of the NCC at 445.0-315.0 Ma and deformation and magmatism at 320.0-200.0 Ma. P2 corresponds to the Mesozoic tectonic activities, such as the closure of the Mongol-Okhotsk Ocean, the turning of the Izanagi plate and mantle convection. P1 mainly corresponds to the Izanagi-Pacific ridge, the closure of the Tethys Ocean, and the rotation of the Philippine Sea plate in the Cenozoic. Our study provides evidence for the destruction of the NCC, and has significance for the understanding of the deep mechanism.

关键字：apatite fission track (AFT); thermal evolution; minimum age; Linqing Sub-basin; North China Craton

ISSN号：2075-163X

卷、期、页：卷: 11期: 11

发表日期：2021-11-01

影响因子：2.379900

期刊分区（SCI为中科院分区）：三区

收录情况：SCIE（科学引文索引网络版）

发表期刊名称：MINERALS

参与作者：许威

第一作者：邱楠生,常健

论文类型：期刊论文

论文概要：许威,邱楠生,常健，Meso-Cenozoic Exhumation of the Linqing Sub-Basin, Bohai Bay Basin: Implications for Cratonic Destruction，MINERALS，2021，卷: 11期: 11

论文题目：Meso-Cenozoic Exhumation of the Linqing Sub-Basin, Bohai Bay Basin: Implications for Cratonic Destruction